Woburn Circle Drainage Improvements

The Woburn Circle to Bearfoot Circle Drainage Improvements project involved comprehensive upgrades to the existing storm drain system. Key work included repairing and rehabilitating the  existing storm drain infrastructure, through sliplining the existing 54-inch corrugated metal pipe (CMP) host pipe with a new 42-inch fiberglass reinforced pipe (FRP), enhancing the structural integrity and flow capacity of the storm drain system. Damaged sections of storm drain pipe identified in the condition assessments were repaired or replaced as needed.

Work limits and access pits were a key focus, along with crossing utilities and limited site access, to improve stormwater collection and conveyance. Installation of new storm drain pipes was accomplished using trenching and sliplining methods, with careful coordination around water, sewer, gas, electric, telecom utility crossings to maintain service continuity and protect existing infrastructure. Construction activities included live-flow sliplining, annular space grouting, restoration of disturbed property to pre-construction condition, and compliance with Municipality of Anchorage Standard Specifications (MASS).

Overall, the project strengthened stormwater management by repairing and upgrading existing storm drain pipes, catch basins, and manholes, while installing new storm drain infrastructure to maintain long-term reliability and improved drainage performance.